A 3-year PhD position is available in co-supervision between the Geosciences Department at the University of Rennes and IRPHÉ at Aix-Marseille University, France. The research focuses on the dissolution trapping of CO2, specifically convective dissolution in granular porous media. This project is funded by CNRS and aims to advance understanding of how CO2 can be stored in subsurface geological formations through dissolution processes. The PhD project will experimentally study convective dissolution in granular porous media using advanced optical methods such as laser-induced fluorescence and stereo-PIV to measure three-dimensional concentration fields and flow velocities. The research is highly interdisciplinary, combining geosciences, fluid mechanics, hydrology, and engineering. The successful candidate will have the opportunity to work in both Rennes and Marseille, with a one-year secondment at the partner institution. Applicants should have a master's degree in engineering (mechanical, chemical, civil) or natural sciences (fluid mechanics, physics, earth sciences, hydrology). Strong knowledge of fluid mechanics and transport processes is required, and experience with table-top flow experiments is a strong asset. Skills in Matlab or Python for data analysis, especially image processing, are appreciated. Good organizational skills and the ability to work in interdisciplinary teams are essential. The working language can be English or French, and women are strongly encouraged to apply. The position offers the standard CNRS PhD student salary, including social security benefits, and provides all necessary equipment and lab space. The University of Rennes and Aix-Marseille University are committed to gender equality and offer a stimulating research environment. The application deadline is March 15, 2026, and the start date is as early as possible, but no later than July 1, 2026. To apply, send your application electronically to Prof. Yves Méheust and Prof. Patrice Meunier, including a CV, publication list, and a short statement of motivation.

A fully funded 3-year PhD position is available in co-supervision between the Department of Geosciences at the University of Rennes and the Institut de Recherche sur les Phénomènes Hors Équilibre (IRPHE) at Aix-Marseille University, France. The research focuses on 'Dissolution trapping of CO2: convective dissolution in granular porous media,' a critical topic in geosciences and environmental science, with direct relevance to climate change mitigation and subsurface CO2 storage. The project investigates the mechanisms by which CO2 can be trapped in the subsurface, specifically through convective dissolution in granular porous media. The research will use advanced experimental techniques, including laser-induced fluorescence and stereo-PIV, to measure three-dimensional concentration fields and flow velocities of dissolved CO2. The successful candidate will work with a multidisciplinary team and have access to state-of-the-art laboratory facilities at both host institutions. Applicants should hold a degree in engineering (mechanical, chemical, civil) or natural sciences (fluid mechanics, physics, earth sciences, hydrology). Strong knowledge of fluid mechanics and transport processes is required, and experience with table-top flow experiments is highly valued. Skills in Matlab or Python for data analysis, especially image data, are appreciated. The position is open to candidates with a strong interdisciplinary background and organizational skills. The work language can be either English or French, depending on the student's preference, and women are especially encouraged to apply. The PhD student will benefit from a standard CNRS PhD salary, including social security benefits, and will spend one year at a second host institution during the program. The cities of Rennes and Marseille offer vibrant academic and cultural environments. Applications should be sent to Prof. Yves Méheust and Prof. Patrice Meunier, including a CV, publication list, and a short statement of motivation. The application deadline is March 15, 2026, and the start date is as early as possible, but no later than July 1, 2026.